Attachment for phonographs.



No. 811,633. PATENTED FEB. 6, 1906.

z. T. GROVER.

ATTACHMENT FOB. PHONOGRAPHS. APPLICATION rum: JAN.24. 1905.

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Attomgs ZENAS TARBLE GROVER, OF SOUTH NEW BERLIN, NEW YORK.

ATTACHMENT oe HoNoenAPHs.

Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed January 24, 1905. Serial No. 242,548-

l'o all whom it may concern/.-

Beit known that I, ZENAS TARBLE Gnovnn,

. a citizen of the United States, residing at I ments in phonographs,grapllgplphones, and

es, an more similar sound-producing mac articulajly to a novel form ofmechanism or automatically operating the motor-brake after the sound-boxhas entirely-completed the reproduction of the record.

The object of the invention is to provide a simple, inexpensive, andefficient device of this character capable of being used in connectionwith any of the well-known forms.

of sound producing and recording machines and which will automaticallyapply the braketo the motor, and thereby positively stop the latter whenthe ma-chinehasfinished playing a record.

A further object of the invention is to revide a tri -lever adapted tobe on age by the repro ucer-arm to automalica ly ap ly the brake, saidtrip-lever being provi ed with a lon ltudinally-adjustable in or screwwhereby t e device may be set or stopping the actuating-motor at anypredetermined time.

V With these and other objects in view the novel combination and arraninvention consists in the construction and ement of parts ustrated inthe accompanying drawings, and pointed out in theclaims hereto appended,it being understood that various 0 anges in form, proportion, and minordetails of construction may be resorted to without departing fronrtheprinciple or sacrificing any of the advantages of this invention.

In theaccompanying drawings, forming a part ofthis specification, Figure1 is a perspective view of a phonograph, showing my improved vbrake sapplying device applied thereto. Fig; 2 is a longitudinal sectional viewof the device detached. Fig. 3 is a transverse sectional view of thesame, and Fig. 4 is a detail erspective view of the connecting link an--a portion of the rod detached.

Similar numerals of. reference indicate corproved forms of respondingparts in all" the figures of the drawings. The improved brake-applyingdevice may be used in connection with any of the apphonographs or aphoamotor is employe for reciprocating the sound-box carriage, and by way ofillustration I have shown the device attached totheweltknown Edison typeof machine, in which 5 re 01' stand, 6 the threads traversing or feedshaft, and 7 the sound-box mounted for travel on said shaft over thesurface of the cylindrical record 8.

Extending throu h a slot 9 in the cabinet or standis a brake-lever 10,operatively connected with a spring, weight, electric, or other motor,(notshown') the latter be'n arranged within the casing and connected byphones in which resents the cabinet a belt or suitable gearing to. thetraversingshaft 6 for moving the sound box carriage over the surface ofthe record. The several parts 'of the machine above described are ofwell-known construction and form no part of this invention, theessential feature of which consists of a housing or casing 11, containinthe mechanism for automatically applying the brake. The casing 11, whichis preferably formed of. a single piece of metal, is mounted on the topof the stand or cabinet to one side of the brake-lever, as shown, and isprovided with a laterally-extending flange 12, having a shoulder 13 toaccommodate the base 14 of the machine; and one or more openings adaptedto receive screws or similar fastening devices 15, by means of which thecasing is secured in position on the cabinet. The opposite end walls ofthe casing are provided with alined openings 16 for the reception of aspring-actuated bolt or rod'1 7, one end of which is flattenedlaterally, as indicated at 18, while the opposite end thereof isprovided with a link 19, which fits over-the free end of-thebrake-lever. The link 19 is detachabl secured to the rod 17 andisprovided wit an angularlydisposed terminal spring ring or loop 20, whichengages a recess 21 in the end of saidzrod, so as to prevent acoidentaldisplacement of the former. Loosely mounted on the rod 17 is a washer ordisl i 21 whiclnbears a ainst the flattened portion 18 oftheroci, anmounted onsaid rod and interposed between the washer and one end of loorev,

the casing is a coil-spring 22, the normal tendency of which is to exerta longitudinal pull on the brake-lever when the link is in engagementtherewith. Pivoted within the casing H above the rod 17 is a bell-cranktrip-lever 23, the long arm of which extends through a slot 24 in thetop of the casing and is provided with a threaded opening for thereception of an adjusting-screw 25, While the short arm of the lever isweighted, as indicated at 26, and adapted to engage a locking-notch 27in the flattened end of the rod 17 when said triplever is in setposition. It will thus be seen that when the free end of the rod 17 isforced rearwardly the short arm 28 of the trip-lever will drop bygravity and engage the notch in the rod 17, and when the sound-box hasentirely completed the reproduction of the record the depending arm 29of the former will engagp the screw and tilt the trip-lever, there ypermitting the spring to force the rod 17 forwardand apply the brake tothe actuating-motor.

The adjusting-screw is provided at one end with an enlargement 30,adapted to receive the impact of the sound-box, and at the opposite endthereof with a milled head 31, by means'of which the screw may beadjusted to adapt the device for stopping the motor at any predeterminedposition on the record. The adjustability of the screw 25 is animportant feature, inasmuch as the sound-waves reproduced on therecord-cylinder terminate at varying distances from the end of, thesame, and it is hi hly desirable to stop the motor as soon as t emachine has completed the reproduction of the record in order to preventinjury to the stylus and to obviate the disagreeable rasping soundusually produced w en the motor is allowed to run after finishin therecord.

It wil of course be understood that the de vice may be used for applyingany particular style of brake and that the same may be poucmgmachines'which is operable by the movement of the reproducer-armtoautomatically apply the motor-brake.

Havin thus described the invention, what is claime isv 1. In aphonograph, the combination with a motor-brake, of a feed shaft, asound-box carriage mounted for travel .on said shaft, a

trip-lever actuated by the sound-box carria e for controlling the brake,and an adjustable impact-pin carried by the trip-lever.

2. In a phonograph, the combination with a motor-brake, of a feed-shaft,a sound box carriage mounted for travel on said shaft, a weightedtrip-lever actuated by the soundbox carriage for controlling the brake,and a threaded impact-pin adjustably mounted on one end of thetrip-lever.

3. In a phonograph, the combination with a motor-brake, of a feed-shaft,a sound-box carriage mounted for travel on said shaft, a spring-actuatedrod connected to the brake and provided with a locking-notch, and atrip-lever adapted to engage the notch in the rod to hold the same inset position, said lever being actuated by the sound-box to release therod and operate the brake.

4. In a phonograph, the combination with a motor-brake, of a feed-shaft,a sound-box carriage mounted for travel on said shaft, a spring-actuatedrod connected to the brake and provided with a locking-notch, and apivoted bell-crank trip-lever the short arm of which is wei hted andadapted to engage said notch for ho ding the rod in set position, saidlever being actuated by the sound-box carriage to release the rod andoperate the brake.

5. In a phonograph, the combination with a motor-brake, of a feed-shaft,a sound-box carriage mounted for travel on said shaft, a spring-actuatedrod connected to the brake and provided with a locking-notch, a pivotedbell-crank trip-lever the short arm of which is Wei hted and ada ted toengage said notch for holding the rod in set position, and an adjustable impact-pin carried by the long arm of the lever for engagementwith the said box-carriage.

6. In a phonograph, the combination with r a motor-brake, of afeed-shaft, a sound-box carriage mounted for travel on said shaft, acasing provided with alined openings, a springactuated rod slidablymounted in the openings of the casing and provided at one end thereofwith a locking-notch, a bell-crank trip-lever pivoted within the casingand having its short arm weighted and adapted to engage thelocking-notch for holdin said rod in set position, the long arm of sailever passing through an opening in the top of the easingforengagementwith the said box-earriage. t

. 7. In a phonograph, the combination with a motor-brake, of afeed-shaft, a sound-box mounted for travel on said shaft, a casingprovided with alined openings, a rod slidably mounted in said openingsand provided with a locking-notch, a detachable link enga g the rod andconnected to'the brake, a pate carried by the rod, a spring inter osedbetween the plate and the casing, a l-l crank trip-lever pivoted Withinthe casing the short arm of which engages the notch in the rod forholding the latter in set position, and an adjustable impact-pin carriedby the long arm 5 of the lever for engagement with the soundboxcarriage.

In testimony that I claim the foregoing as ZENAS TARBLE GROVER.

Witnesses CHAS. LITTLEFAIR,' ALLAH L. MORSE,

